Keyboard



FIG. 1 is a top perspective view of a keyboard showing my new design;

FIG. 2 is a front elevational view of the keyboard thereof;

FIG. 3 is a rear elevational view of the keyboard thereof;

FIG. 4 is a right side elevational view of the keyboard thereof;

FIG. 5 is a left side elevational view of the keyboard thereof; and,

FIG. 6 is a bottom plan view of the keyboard thereof. 

The ornamental design for the keyboard, as shown and described. 